Parity Technologies is an influential blockchain development company that offers a variety of open-source software solutions for creating and using decentralized technologies. Some of their solutions include Ethereum and Bitcoin clients, cross-chain technologies, smart contracts, testnets, and cryptocurrency wallets. The company was created by Gavin Wood, the co-founder of Ethereum.

Etherparty is a cloud platform offering blockchain related software. They want to make smart contracts as easy and accessible as possible. by helping to automate many functions that decentralized applications require. Etherparty focuses on user-friendly design to simplify the creation of smart contract related platforms. They are currently developing several software products aimed at users with different needs, including: token generation, crowdfunding, supply chain management, and philanthropy. Etherparty is powered by FUEL tokens.

ConsenSys is one of the most influential blockchain technology companies. They are working on a variety of projects to create the infrastructure and applications that will enable scalable adoption of blockchain-based systems. The company's efforts are focused on the Ethereum ecosystem, and include divisions working to advance technology development, establish industry standards, and provide consulting, marketing, and education services.